[INFO] cloning repository https://github.com/yuizho/rust_tutorial [INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/yuizho/rust_tutorial" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyuizho%2Frust_tutorial"` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyuizho%2Frust_tutorial'... [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] 2f11b8d7abe02e6d47fd24cb320467162026749a [INFO] testing yuizho/rust_tutorial against beta-2020-06-03 for beta-1.45-1 [INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyuizho%2Frust_tutorial" "/workspace/builds/worker-4/source"` [INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/yuizho/rust_tutorial on toolchain beta-2020-06-03 [INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started tweaking git repo https://github.com/yuizho/rust_tutorial [INFO] finished tweaking git repo https://github.com/yuizho/rust_tutorial [INFO] tweaked toml for git repo https://github.com/yuizho/rust_tutorial written to /workspace/builds/worker-4/source/Cargo.toml [INFO] crate git repo https://github.com/yuizho/rust_tutorial already has a lockfile, it will not be regenerated [INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "build" "--frozen"` [INFO] [stdout] e71d57f771327173871ce38ac77b97f095efe57cb8814ce9f857cffe9f8a0ba8 [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `"docker" "start" "-a" "e71d57f771327173871ce38ac77b97f095efe57cb8814ce9f857cffe9f8a0ba8"` [INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted [INFO] [stderr] Compiling the_rust_programming_language v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] warning: unused variable: `y` [INFO] [stderr] --> src/main.rs:8:13 [INFO] [stderr] | [INFO] [stderr] 8 | let (x, y, z) = (1, 2, 3); [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_y` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `z` [INFO] [stderr] --> src/main.rs:8:16 [INFO] [stderr] | [INFO] [stderr] 8 | let (x, y, z) = (1, 2, 3); [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_z` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `v1` [INFO] [stderr] --> src/main.rs:104:15 [INFO] [stderr] | [INFO] [stderr] 104 | fn borrowing2(v1: &Vec, v2: &Vec) -> i32 { [INFO] [stderr] | ^^ help: if this is intentional, prefix it with an underscore: `_v1` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `v2` [INFO] [stderr] --> src/main.rs:104:30 [INFO] [stderr] | [INFO] [stderr] 104 | fn borrowing2(v1: &Vec, v2: &Vec) -> i32 { [INFO] [stderr] | ^^ help: if this is intentional, prefix it with an underscore: `_v2` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:52:9 [INFO] [stderr] | [INFO] [stderr] 52 | let mut v = vec![1, 2, 3]; [INFO] [stderr] | ----^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_mut)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `Quit` [INFO] [stderr] --> src/main.rs:84:5 [INFO] [stderr] | [INFO] [stderr] 84 | Quit, [INFO] [stderr] | ^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `ChangeColor` [INFO] [stderr] --> src/main.rs:85:5 [INFO] [stderr] | [INFO] [stderr] 85 | ChangeColor(i32, i32, i32), [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `Move` [INFO] [stderr] --> src/main.rs:86:5 [INFO] [stderr] | [INFO] [stderr] 86 | Move { x: i32, y: i32 }, [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `x` [INFO] [stderr] --> src/main.rs:95:8 [INFO] [stderr] | [INFO] [stderr] 95 | fn x(&self) -> &'a i32 { [INFO] [stderr] | ^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `borrwoing1` [INFO] [stderr] --> src/main.rs:100:4 [INFO] [stderr] | [INFO] [stderr] 100 | fn borrwoing1(v1: Vec, v2: Vec) -> (Vec, Vec, i32) { [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `diverges` [INFO] [stderr] --> src/main.rs:116:4 [INFO] [stderr] | [INFO] [stderr] 116 | fn diverges() -> ! { [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: 11 warnings emitted [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.74s [INFO] running `"docker" "inspect" "e71d57f771327173871ce38ac77b97f095efe57cb8814ce9f857cffe9f8a0ba8"` [INFO] running `"docker" "rm" "-f" "e71d57f771327173871ce38ac77b97f095efe57cb8814ce9f857cffe9f8a0ba8"` [INFO] [stdout] e71d57f771327173871ce38ac77b97f095efe57cb8814ce9f857cffe9f8a0ba8 [INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "test" "--frozen" "--no-run"` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] 8ce81ca9ca382d8b7ba0dc3cf419d74edfe3ff62f2e375a6cf48fbde9e96f5b4 [INFO] running `"docker" "start" "-a" "8ce81ca9ca382d8b7ba0dc3cf419d74edfe3ff62f2e375a6cf48fbde9e96f5b4"` [INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted [INFO] [stderr] Compiling the_rust_programming_language v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] warning: unused variable: `y` [INFO] [stderr] --> src/main.rs:8:13 [INFO] [stderr] | [INFO] [stderr] 8 | let (x, y, z) = (1, 2, 3); [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_y` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `z` [INFO] [stderr] --> src/main.rs:8:16 [INFO] [stderr] | [INFO] [stderr] 8 | let (x, y, z) = (1, 2, 3); [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_z` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `v1` [INFO] [stderr] --> src/main.rs:104:15 [INFO] [stderr] | [INFO] [stderr] 104 | fn borrowing2(v1: &Vec, v2: &Vec) -> i32 { [INFO] [stderr] | ^^ help: if this is intentional, prefix it with an underscore: `_v1` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `v2` [INFO] [stderr] --> src/main.rs:104:30 [INFO] [stderr] | [INFO] [stderr] 104 | fn borrowing2(v1: &Vec, v2: &Vec) -> i32 { [INFO] [stderr] | ^^ help: if this is intentional, prefix it with an underscore: `_v2` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:52:9 [INFO] [stderr] | [INFO] [stderr] 52 | let mut v = vec![1, 2, 3]; [INFO] [stderr] | ----^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_mut)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `Quit` [INFO] [stderr] --> src/main.rs:84:5 [INFO] [stderr] | [INFO] [stderr] 84 | Quit, [INFO] [stderr] | ^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `ChangeColor` [INFO] [stderr] --> src/main.rs:85:5 [INFO] [stderr] | [INFO] [stderr] 85 | ChangeColor(i32, i32, i32), [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `Move` [INFO] [stderr] --> src/main.rs:86:5 [INFO] [stderr] | [INFO] [stderr] 86 | Move { x: i32, y: i32 }, [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `x` [INFO] [stderr] --> src/main.rs:95:8 [INFO] [stderr] | [INFO] [stderr] 95 | fn x(&self) -> &'a i32 { [INFO] [stderr] | ^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `borrwoing1` [INFO] [stderr] --> src/main.rs:100:4 [INFO] [stderr] | [INFO] [stderr] 100 | fn borrwoing1(v1: Vec, v2: Vec) -> (Vec, Vec, i32) { [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `diverges` [INFO] [stderr] --> src/main.rs:116:4 [INFO] [stderr] | [INFO] [stderr] 116 | fn diverges() -> ! { [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: 11 warnings emitted [INFO] [stderr] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 2.82s [INFO] running `"docker" "inspect" "8ce81ca9ca382d8b7ba0dc3cf419d74edfe3ff62f2e375a6cf48fbde9e96f5b4"` [INFO] running `"docker" "rm" "-f" "8ce81ca9ca382d8b7ba0dc3cf419d74edfe3ff62f2e375a6cf48fbde9e96f5b4"` [INFO] [stdout] 8ce81ca9ca382d8b7ba0dc3cf419d74edfe3ff62f2e375a6cf48fbde9e96f5b4 [INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "test" "--frozen"` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] 3d20d362a788ba8e8e98070780d7c1f21ace044b064f891f17405c78e3c88095 [INFO] running `"docker" "start" "-a" "3d20d362a788ba8e8e98070780d7c1f21ace044b064f891f17405c78e3c88095"` [INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted [INFO] [stderr] warning: unused variable: `y` [INFO] [stderr] --> src/main.rs:8:13 [INFO] [stderr] | [INFO] [stderr] 8 | let (x, y, z) = (1, 2, 3); [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_y` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `z` [INFO] [stderr] --> src/main.rs:8:16 [INFO] [stderr] | [INFO] [stderr] 8 | let (x, y, z) = (1, 2, 3); [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_z` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `v1` [INFO] [stderr] --> src/main.rs:104:15 [INFO] [stderr] | [INFO] [stderr] 104 | fn borrowing2(v1: &Vec, v2: &Vec) -> i32 { [INFO] [stderr] | ^^ help: if this is intentional, prefix it with an underscore: `_v1` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `v2` [INFO] [stderr] --> src/main.rs:104:30 [INFO] [stderr] | [INFO] [stderr] 104 | fn borrowing2(v1: &Vec, v2: &Vec) -> i32 { [INFO] [stderr] | ^^ help: if this is intentional, prefix it with an underscore: `_v2` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:52:9 [INFO] [stderr] | [INFO] [stderr] 52 | let mut v = vec![1, 2, 3]; [INFO] [stderr] | ----^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_mut)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `Quit` [INFO] [stderr] --> src/main.rs:84:5 [INFO] [stderr] | [INFO] [stderr] 84 | Quit, [INFO] [stderr] | ^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `ChangeColor` [INFO] [stderr] --> src/main.rs:85:5 [INFO] [stderr] | [INFO] [stderr] 85 | ChangeColor(i32, i32, i32), [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `Move` [INFO] [stderr] --> src/main.rs:86:5 [INFO] [stderr] | [INFO] [stderr] 86 | Move { x: i32, y: i32 }, [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `x` [INFO] [stderr] --> src/main.rs:95:8 [INFO] [stderr] | [INFO] [stderr] 95 | fn x(&self) -> &'a i32 { [INFO] [stderr] | ^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `borrwoing1` [INFO] [stderr] --> src/main.rs:100:4 [INFO] [stderr] | [INFO] [stderr] 100 | fn borrwoing1(v1: Vec, v2: Vec) -> (Vec, Vec, i32) { [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `diverges` [INFO] [stderr] --> src/main.rs:116:4 [INFO] [stderr] | [INFO] [stderr] 116 | fn diverges() -> ! { [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: 11 warnings emitted [INFO] [stderr] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.03s [INFO] [stderr] Running /opt/rustwide/target/debug/deps/the_rust_programming_language-3f0cc2107c5985e7 [INFO] [stdout] [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out [INFO] [stdout] [INFO] running `"docker" "inspect" "3d20d362a788ba8e8e98070780d7c1f21ace044b064f891f17405c78e3c88095"` [INFO] running `"docker" "rm" "-f" "3d20d362a788ba8e8e98070780d7c1f21ace044b064f891f17405c78e3c88095"` [INFO] [stdout] 3d20d362a788ba8e8e98070780d7c1f21ace044b064f891f17405c78e3c88095